.body_body{
    background-size: 1920px 1080px;
    background-attachment: fixed;
}
.div_entrance{
    width: 500px;
    height: 400px;
    position: fixed;
    top: 370px;
    left: 1000px
}
.p_user{
    font-size: 26px;
}
.p_pass{
    font-size: 26px;
}
.p_submit{
    text-align: right;
    margin-right: 150px
}
.p_receive{
    font-size: 14px;
    color: red;
    text-align: right;
    margin-right: 150px
}
.input_user{
    width: 250px;
    height: 50px;
    font-size:1.2em;
    height:1.5em;
    border-radius:4px;
    border:1px solid #c8cccf;
    color:#6a6f77;
}
.input_pass{
    width: 250px;
    height: 50px;
    font-size:1.2em;
    height:1.5em;
    border-radius:4px;
    border:1px solid #c8cccf;
    color:#6a6f77;
}
.input_submit{
    background-color: #e7e7e7;
    border: none;
    color: black;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 26px;
}

